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try resetting cksum (again)

This commit is contained in:
Nico Schottelius 2019-03-05 21:49:50 +01:00
parent 7d53abef6d
commit 81f89fe87a
2 changed files with 12 additions and 5 deletions
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1
doc/plan.org
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@ -65,6 +65,7 @@
| | - Checksum's in scapy | | | | - Checksum's in scapy | |
| | - Python2 ipaddress fix (import future) | | | | - Python2 ipaddress fix (import future) | |
| | - P4 checksum_with_payload | | | | - P4 checksum_with_payload | |
| | - Reading scapy / inet6 | |
| | | | | | | |
| | | | | | | |
| 2019-03-08 | NAT46 1:1 table ICMP, ICMPv6 working | | | 2019-03-08 | NAT46 1:1 table ICMP, ICMPv6 working | |

16
p4app/controller.py
View File

@ -246,20 +246,26 @@ class L2Controller(object):
# S=1 -> solicitated # S=1 -> solicitated
i2 = ICMPv6ND_NA(S=1, R=0, tgt=src_addr) i2 = ICMPv6ND_NA(S=1, R=0, tgt=src_addr)
# try5: cksum not chksum !
i2.cksum = None
i3 = ICMPv6NDOptDstLLAddr(lladdr=src_mac) i3 = ICMPv6NDOptDstLLAddr(lladdr=src_mac)
answer = e / i / i2 / i3 answer = e / i / i2 / i3
# try 4 # try 4
for l in [Ether, IPv6, ICMPv6ND_NA, ICMPv6NDOptDstLLAddr]: # for l in [Ether, IPv6, ICMPv6ND_NA, ICMPv6NDOptDstLLAddr]:
try: # try:
del answer[l].chksum # del answer[l].chksum
except AttributeError: # except AttributeError:
pass # pass
# Let scapy recalc checksum (try3) # Let scapy recalc checksum (try3)
# answer = answer.__class__(str(answer)) # answer = answer.__class__(str(answer))
self.send_pkg(answer) self.send_pkg(answer)
def send_pkg(self, pkg): def send_pkg(self, pkg):